Costco's Membership Flywheel
How a warehouse club generates most of its profit from $60 annual fees — and why that arrangement is nearly impossible to copy.
Costco runs the retail floor at near-zero margin to maximize member value, then captures profit through high-retention membership dues. The model self-reinforces.
About 75% of operating income comes from membership fees with renewal rates above 90% in the US. Razor-thin product markups (capped internally) push savings to members.
Scale + culture. Limited SKU count drives supplier leverage. Employee tenure is unusually high for retail, reducing turnover costs and lifting in-store quality.
E-commerce substitution for non-perishables. Wage inflation eroding the operating cost structure. Capital intensity of new warehouses limiting unit growth.